single line command

roshanjain2 · February 7, 2007, 3:57am

i need to search for a single pattern in three different logs....what would be the best one line script????

anbu23 · February 7, 2007, 4:01am

grep "pattern" log1 log2 log3

roshanjain2 · February 7, 2007, 4:06am

but i want to differentiate results got from each of the logs...the above command will display all the results in one screen

eg:
log1
results
log2
results
log3
results

matrixmadhan · February 7, 2007, 4:31am

you have the results differentiated with the output of grep itself

grep pattern l1 l2 l3

l1: pattern
l2: pattern
l3: pattern

anbu23 · February 7, 2007, 4:33am

grep "pattern" log1 log2 log3 | 
awk -F: ' { if ( file != $1 ) { file=$1; print file } sub(/^[^:]*:/,"",$0);print $0 } '